Or more precisely I use both the Two-per-day tablets and the "Super Booster."
Of course the popular saying "You get what you pay for" is terribly flawed, as a lot of times one does not. But the alternate version "You don't get more than you pay for" is almost always true, except for clearances or the like where the seller is taking a loss.
The relevance is, with inexpensive multivitamins you don't get more than you pay for.
For example, Vitamin E is best provided largely as gamma tocopherol. But uh oh, it's expensive! So inexpensive multivitamins use only or principally alpha tocopherol.
But wait! The natural form (only the d isomer) is more expensive, while the synthetic (dl, mixture of forms) while not nearly is good is a whole lot cheaper. So which does the inexpensive multivitamin use?
Or Vitamin K. Research has lately shown that much more Vitamin K is optimal than previously thought. And, it should include Vitamin K2, not just K1.
But wait a sec, that's expensive.
So the cheap multivitamins of course provide zero K2.
It goes down the line, with typical midline products that one might find in the GNC or Vitamin Shoppe or wherever having quite significant compromises, and the supermarket ones being way, way below that.
It does become a question of comparing relative to the overall diet. In a given case it may be much more called for to identify just a small number of nutrients that should individually be fortified.
But if on the other hand cutting and having as a large portion of the diet a protein product that does not provide added vitamins and minerals (beyond those minerals and electrolytes "coming along naturally" with the milk protein isolate), then going the full-coverage route may be more economical, compared to doing it with quality stuff via the individual-nutrients route.
Or if it's a quite good mostly-whole-foods diet, plus Superfood, especially if nuts are not omitted, then yes likely nothing extra is needed, though as personal opinion it seems to me that the high levels of gamma-tocopherol and K1/K2 (also D3 but that will likely require a separate product) that are likely to be achieved only with supplementation are worth doing.
Not for performance enhancement but long-term health. Performance enhancement, you might see a trace from the Vitamin E relatively to merely typical good levels but surely not much if detectable at all (I don't know.) No performance enhancement of any kind expected from the K.